Automatic boiler washer



May 14, 1940. w. L. PEARCE 2.200.296

AUTOMATIC BO ILER WASHER Filed Oct. 18, 1938 2 s t sh i 1 W/LL/AM L. P549015 EMT/ H May 14, 1940. w. PEARCE AUTOMATIC BOILER WASHER Filed Oct. l8, l938 2 Sheets-Sheet 2 Patented May 1940 I j lazoaz'sc #AritroMATIoBoILER WASHER I "William L fPearce, Houston, Tex;

This invention relates to a boiler washer.

. In the operation of boilers for generating steam 15 flushing operation, for removing said clogging material, may be carried on while the boiler is in use thus not interferingwith the operation of the boiler. I I

It is afurther object of the invention'to provide a flushing, or washing attachment which maybe readily applied to, orremoved from, a conventional type of boiler, which may be cheaply constructed and is very efficient in use. A still further object of the invention resides in a novel method whereby all clogging material accumulating in the water chamber about the boiler furnace may be quickly, easily, and thoroughly removed.

With the above and other objects in view 5 the 30 invention has particular relation to certain novel [features of construction, operation and arrange mentof parts and to a novel method, an example of which is given in this specification and illustrated in the accompanying drawings, wherein: I

Figure 1 shows a front, elevational view'sho-wing a battery of boilers with the washing equipment applied, thereto.

Figure 2 shows a vertical, sectional view taken on the line 2-2 of Figure 1.

and

sectional view taken on the line 4-4 of Figure l. Referring now more particularly tothe drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral ldesignates a boiler of conventional construction, three being shown in Figure 1. Each boiler has a fire box, or furnace, 2 as illustrated in Figure 2. As shown in Figure l the steam domes 3 of the boilers have the steam. pipe 4 connected thereto for the, conduct of the steam to the' engine or other point of utilization. The water chamber 5 of each boiler surrounds the Figure 3 shows an enlarged, fragmentary, cross sectional view taken on the line 3,3' of Figure 1,.

Figure 4 shows an enlarged, fragmentary, cross- I nozzle furnacexland scale and'other clogging material gradually collects in said water chamberand interferes with the -circulation of the water there through causing the walls of the furnace to burn out unless the clogging material be'from time to time removed.

. My (i The parts hereinabove referred to are of "con"- ventional construction but novel equipment has been provided for washing or cleansing the water' "chamber and'which will now be described. A v v The numeral 6 designates a manifold pipe I which extends transversely of the battery of boilers and into which a supply pipe 1, leading from a suitable pump, is connected. Water supply lines 8 lead from the manifold and are connected into the ends of the respective boilers remote from the furnace and these pipes 8 are controlled by the respective shut off valves 9.

Tubular water legs l0, ID are connected into the manifold 6 there'being'one pair of legs I0 for each boiler. Each pair of legs l0 merge into a common nozzle pipe which is inwardly .turned through the front-wall of the boilerv above the crown sheet of the furnace. On the inner end of the inwardly turned nozzle pipe .ll there is a nozzle I2 having the diverging outlets through which water is sprayed in a fanlike sheet across the top of the crown sheet and said nozzle 12 has a downwardly directed nozzle opening I 3" through which the water is forced downwardly.

between the front wall of the furnace and the front wall of the boiler as more clearly illustrated in Figure 2.

Each leg It! also has an inwardly directed nozzle pipe M which extends through the front wall of the boiler on opposite sides, and beneath the fire box, or furnace, and these nozzle pipes l4 terminate in the nozzles I5.

As more clearlyillustrated in Figure Beach nozzle l5 has the oppositely arranged, trans-, versely disposed outlet openings through which the washing fluid is emitted in each direction parallel with the front wall of the boiler and each l5 has a' discharge opening arranged axially with respect to the nozzle pipe l4 and through which the washing fluid is discharged in a direction parallel with the walls of the boiler.

The nozzle pipes l [and I4 extend through the respective cover plates 16 and I], H. 'The nozzle pipes are threaded through the respective cover plates as shown. The margins of the cover plates engage against the inner side of the front wall of the boiler completely around the openings to be closed thereby and arcuate clamps I8 and l9, [9 have central bearings through which the respective nozzle pipes ll, l4 extend'and clamp nuts 20, 2|, 2! are threaded onto said respective nozzle pipes and clamp againstthe corresponding clamps I8, 19 whereby to secure said cover plates l6, IT in place.

Each water leg I!) is equipped with a'shut oil? valve as 22. These valves 22 are closed during the normal operation of the boilers. Each chamher 5 is provided with a drain pipe 23, at its lower end vwhichis, normallyv closed by the valve24.* d g v When it is desired to flush out and cleanse the chamber 5 of any boiler the steam line leading from said boiler may be closed or cut off by closing the corresponding valve as 25. The valve 24 and the valves 22 of said boiler may then be.

opened. A flushing fluid, under pressure, will thus be supplied into the boiler beneath, and-infront of as well as along the sides of the furnace or fire box, by the nozzles l5 and will be supplied across the'crow n sheet of the fire box 'andin front of said fire box bythe nozzle 82, theologgin'g material draining out through the drain pipe 23. V

In some cases it may be desired to maintain the boiler in operation while the cleansingprocess is being -carried on and in such event the valve "-25 will be allowed to remain open and the correso as to keep the boiler being cleansed supplied with the necessary quantity of water for that puruse to the end that the .fiushing fluid may be supplied to and relieved from the water "chamber about the fire box without abnormally disturbing the level of the water about the tubes ofthe boiler, v

The drawings invention by way of illustration only, ,While the and description" disclose what is now consideredto be a preferredform of the broad principle of the invention will be defined by the appended claim. I ,What I claim is:

'A washer for a boiler having a waterchamber surrounding the'fire box of the boilerand comprising nozzles anchored to the forward wall of the boiler, one on each'sideof and beneath the fire box and one'arranged above the crown sheet.

of the-"fire box, each nozzle having spray nozzle.

openings adapted to spray a washing fluid in mulower nozzles being positioned to; discharge said fluid below the fire box, to thereby wash beneath firebox and means for supplying washing fluid to the nozzles for performing said washing opera? tions simultaneously. q q .I V

- WILLIAM ,L. PEARCE. 

